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Classified's SPAM - HELP!!!

Discussion in 'Black Hat SEO' started by Serpent, Oct 3, 2011.

  1. Serpent

    Serpent Newbie

    Joined:
    Apr 14, 2008
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    I have to admit I have probably attempted to spam my fair share of classified sites in the past but now the tables have drastically turned...lol

    I am starting a new classified site and I have figured the best way to stop Private message spam is through a captcha.... for most people this will work...

    But how do I prevent mutliple posts? I know KIJIJI is one of the best places that can prevent multiple posts on their site....how do they do so well at stopping SPAM multiple posts?